6 thoughts on “Wood turning spinning tops”

  1. This takes me back about 70 years of my life when we used to play with these tops with a metal pin. As I grew older I started appreciating its dynamics at the manner the chord operates on that angle on the top. It seems a brilliant manner in which to transfer energy to the top through continuous acceleration. First as you throw it the radius at which the chord stands is large so the torque to accelerate the rotational inertia of the top is high and then as the chord is let out it falls on a smaller radius and so it keeps on accelerating to a higher speed . What is interesting is the linear momentum with which one throws the top away from him and at the same time how much he pulls at the chord to ensure that the top gains a rotational acceleration rather than coming back towards the thrower. It is not an easy problem to analyse, and yet those who has physical dexterity can feel when the right throw is mastered. I would say that a theoretical mathematician analysing the modelling of this top would not be any better than that practical child who feels is way around that beautifully made top.
    This may look like a top , but it is applied physics all the way in the manner it operated and that top contains all the phases of education from making it, and designing it and throwing it and they if one has time to learn how to maximise the throw for a good gyro without prcession too much about the vertical. Sir, congratulations for reintroducing all these educational toys which are much more than a toy to those who care to dig deeper in its processes, including those circles formed on that inverted cone whose angle is not so easy to determine to ensure maximum performance in relation to a throw.

  2. I like how you used the screw section of a hook to make the tip. I'm sure the children will love the tops.

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